2166048000 has 576 divisors, whose sum is σ = 8418009600. Its totient is φ = 547430400.

The previous prime is 2166047971. The next prime is 2166048007. The reversal of 2166048000 is 8406612.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166048007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19871946 + ... + 19872054.

It is an arithmetic number, because the mean of its divisors is an integer number (14614600).

Almost surely, 2^2166048000 is an apocalyptic number.

2166048000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2166048000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4209004800).

2166048000 is an abundant number, since it is smaller than the sum of its proper divisors (6251961600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2166048000 is a wasteful number, since it uses less digits than its factorization.

2166048000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 2166048000 is about 46540.8207920746. The cubic root of 2166048000 is about 1293.8661731427.

The spelling of 2166048000 in words is "two billion, one hundred sixty-six million, forty-eight thousand".